● Fillable design can ensure high stability and wind-resistance● High quality HDPE is durable and weather-resistant● Applies to offset umbrella with 1.9" diameter umbrella pole(not included)● Cross base is provided to match with your offset umbrella● 2 flexible wheels and convenient handles facilitate effortlessly movement● Easy to fill the base with large hole● Equipped with drain hole for quick drainage● Applicable to poolside patio beach● Tool-free assembly is simple for you